TTI VSR-10 Upgraded Spring Guide MIL-SPEC MONKEY Patches FPS is around 305-315 w/

FPS is around 305-315 w/

and NIMH batteries

Lens Dimensions: 19mm x 21mm

non-bio plastic diamond extra polished smooth

metal magazine - single stack style

TTI VSR-10 Upgraded Spring Guide MIL-SPEC MONKEY Patches FPS is around 305-315 w/The TTI VSR 10 Upgraded Spring Guide. Comes in 7mm and 9mm versions. A very nice upgraded spring guide for airsoft VSR 10 sniper rifles. Fits in all clones and original styles. The 7mm is the OEM version for most uses and spring types. The 9mm is only for heavy duty upgraded thicker springs (PDI, etc). If you're not sure which type, you can measure your current guide or just get the 7mm to be safe. 7mm is for 11mm outer spring diameter 9mm is for 13mm